Self-threading shuttle



'March 24, 1925.`

C. H. DOUGLASS SELF THREADING SHUTTLE Filed Nov. 11. 1924 2 Sheets-Sheet l Mig March 24,` 1925. 1,531,082

c. H. DoUGLAss SELF THREADINCT SHUTTLE Filed Nov. 11- 1924 2 SheeismSheet 2 Patented Mar. 24, 1925.

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oHARLEsH. DoUeLAss, or onanieren; ancien Istann; annee. nouenass EXECU- vTRIX or SAID canaries nonetnss, nnonnsnn SELFT HR E AIKDING SHUTTLE.

T all whom t may concern.:

`Be it known that I, Cniinnns H. l'Do'Uo- Lass, citizen of the Unit-ed States, residingat Cranstonin the county of Providence and State of Rhode island, have invented certain newand useful Improvements in Selffllhreadlng Shuttles, of which the following is a specification.

My invention relates to self threading shuttles and particularly to the delivery end thereof including' the threading block therein located.

Heretofore the delivery end of shuttle frames or bodies at a point above and in the rear of the delivery `eye have presented a iolnt occasioned by a laterally projecting metal `lip or the like upon the inetal threading block seated in the wood of the body.`

This joint has invited wear, accidental enf gagement `of the filling, and abrasion oi' splitting of the wood adjacent the lip du'ring the reciprocation of the shuttle. rIhis has also increased the expense of consti-uc` tion of the 'shuttle at the point indicated.

The essential objects of` my invention are `to overcome the above disadvantages, and

to increase the strength of the deliveryend of the shuttle; to :facilitate the admission of tlieiilling; and to insure a position of the threading block remote from the lateral i portions of the nose or deliveryend of the bodying my invention,

Figure 2, a. side elevation of the delivery end of the saine,

Figure 3, a section on line ure 1, f l

Figure 4, a plan View of the delivery end oftheshuttle, with the threading block remove-d,

Figures 5 and 6, sections of the saine oni lines 5*,5 and 6 6 respectively of Figure `4, and p- `Figures 7 kand S, a side elevation and a front yend elevation respectively, of the threading block.V

Like characters of reference indicate like parts throughout the views f In the construction of my shuttle herein `shown l5 represents thefraine or body por` ltion provided with the usual bobbin chanirlhe delivery end.

ber` 16 for a bobbin l?. p ory nose portion of the shuttle is indicated by 18.` Anially of the body at the forward end of thev boliibinfcliamber*in the portion 1S of the shuttle is a longitudinally disposed cavity 2O containing a delivery or guide block, indicated in a general way by 22, comprising a base 23, a stud 24 thereon seated in an opening' 25, parallel or spaced vertical side walls or webs 26 and 27 bounding a longitudinal thread passage 28. A portionQQ of the cavity 2O extends beyond the .id of the block and constitutes a part of the passage 28. rlhe block 22 is fixed in place by the usual transversely disposed screw 3() traversing openings 3l and 32 in the block and in the body. Upon the eX- tended forward portion of the` wall 26 is n the usual depending heel 35, and in the rear the top of the wall 27 is a longitudinally disposed forwardly directedlinger 43 whose extremity`44 is laterally broadened and provided with a lateral recess 45 into which the beak point 40 enters. Tliispoint is suliiciently spaced from the overlapping portion v 44 to admit the introduction of a filling thread into the passage A transversely kdisposed rearwardly in clined curvilinear thread passage 47 extends from the longitudinal passage to the lateral face of the nose and communicates at its lower portion with the delivery eye 48. @ne i wall of the passage `47 is formed by the conl Vex face of an inwardly directed beak 50 which extends from one sidey of the nose 18 to the front of the beak point 40, so that the wooden beak `50 embraces the side and forward end'poition of the'inetallic beak.

The filling thread passes from the bobbin through the passages and the delivery eye in the usualinanner.

It will be observed that the presence ofthe beak 50 reduces the width ofthe delivery end of the shuttle at thepoint 5l where the cheek of the shuttle is usually so excessively prominent as to most readily interfere with llO the shuttle box; that no lateral lugs are by this construction required on the portion 39,l

hence there is absent any joint oit' nietal or wood near the side of the shuttle body to occasion exposure to violent Contact with the shuttle box; that the inward position of the Wooden beak as Well as its support and protection of the inetal beak end 40 strengthens the structure; and that the beak 50 in- 10creases the guiding area of the filler.

Walls bounding a longitudinal thread passage, a longitudinally disposed forwardly projecting finger on one Wall, a longitudinally disposed beak on the second wall terminating adjacent the projecting portion ot the linger, the delivery end being provided with a laterally disposed thread passage communicating With the longitudinal thread passage, and an auxiliary beak extending from the side oi the delivery end to the i'or- Ward portion ofthe .first beak.

In testimony' whereof I have aliried my signature.

CHARLES H. DOUGLASS. 

